import turtle

from random import randint

turtle.hideturtle()
turtle.speed(10)

turtle.color('grey')

x = -80
for y in range(-80,80+1,10):
    turtle.penup()
    turtle.goto(x,y)
    turtle.pendown()
    turtle.forward(160)

y = 80
turtle.right(90)
for x in range(-80,80+1,10):
    turtle.penup()
    turtle.goto(x,y)
    turtle.pendown()
    turtle.forward(160)

turtle.speed(1)

turtle.pensize(3)
turtle.color("red")
turtle.penup()

turtle.goto(0,0)

turtle.pendown()
turtle.showturtle()

x = y = 0
while abs(x)<80 and abs(y)<80:
    r = randint(0,3)
    if r == 0:
        x += 10
        turtle.setheading(0)
        turtle.forward(10)
    elif r == 1:
        y -= 10
        turtle.setheading(270)
        turtle.forward(10)
    elif r == 2:
        x -= 10
        turtle.setheading(180)
        turtle.forward(10)
    elif r == 3:
        y += 10
        turtle.setheading(90)
        turtle.forward(10)



turtle.done()
